Multi-Chip LED Lighting Source for Cognitive Performance
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Solution Overview
Problem
Conventional lighting solutions, particularly LED lighting, fail to effectively enhance cognitive performance and mimic sunlight, leading to disruptions in circadian rhythms and reduced alertness due to inadequate spectral composition and high correlated colour temperature, which can impair attention, reaction time, and mood.
Innovation Solution
A unique LED lighting source comprising white, blue, and turquoise monochromatic LED chips, with a specific spectral composition that closely mimics sunlight in the biologically beneficial range of 460 to 660 nm, ensuring balanced light distribution and minimal intensity drop, thereby enhancing cognitive performance and visual fidelity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If high correlated colour temperature LED lighting is used to improve alertness and cognitive performance, then attention and reaction time are enhanced, but circadian rhythms are disrupted and blue light hazards increase
Solution Approach 1:
The patent changes the spectral parameters of LED lighting by combining multiple LED chips with specific wavelengths (blue 460-480nm, cyan 490-510nm, green 530-560nm, yellow-green 560-590nm, red 610-650nm) in optimized ratios to achieve a balanced spectrum that maintains cognitive performance benefits while reducing blue light hazard
Solution Approach 2:
The patent creates a composite lighting system by combining multiple LED chip types (blue, cyan, green, yellow-green, red) with different spectral characteristics to produce a unified light source that exhibits both cognitive-enhancing properties and reduced blue light hazard through spectral balancing
2Productivity
If blue LED chips are used to enhance cognitive performance and attention, then mental alertness is improved, but circadian rhythms are affected and sleep patterns are disrupted
Solution Approach 1:
The patent modifies the spectral composition by adding cyan, green, yellow-green, and red LED chips alongside blue chips, changing the overall spectral parameters to include warmer components that support circadian rhythm stability while maintaining the cognitive benefits of blue light
Solution Approach 2:
The patent creates a composite LED system that combines blue, cyan, green, yellow-green, and red chips in specific ratios (e.g., blue: 30-50%, cyan: 10-30%, green: 10-30%, yellow-green: 5-20%, red: 5-20%) to achieve a balanced spectral profile that supports both attention and circadian health
3Illumination intensity
If conventional LED lighting with luminophores is used to generate white light, then general illumination is achieved, but spectral composition is inadequate and cognitive performance is not optimized
Solution Approach 1:
The patent segments the white light generation process by using multiple LED chip types with distinct spectral outputs instead of a single luminophore system, allowing independent optimization of each spectral component for cognitive performance enhancement
Solution Approach 2:
The patent replaces conventional single-luminophore LED structures with a composite multi-chip system that combines blue, cyan, green, yellow-green, and red LED chips to achieve a superior spectral composition that optimizes cognitive performance while maintaining adequate illumination
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The LED lighting source significantly improves cognitive performance by simulating sunlight, maintaining high intensity and balance across the blue-to-green transition range, resulting in improved attention, reaction time, and mood, while reducing eye strain and promoting better sleep patterns.
Implementation Method 1
The lighting source comprises: - a first plurality of LED chips emitting blue light with a wavelength of 460-480 nm, - a second plurality of LED chips emitting cyan light with a wavelength of 490-510 nm, - a third plurality of LED chips emitting green light with a wavelength of 530-560 nm, - a fourth plurality of LED chips emitting yellow-green light with a wavelength of 560-590 nm, - a fifth plurality of LED chips emitting red light with a wavelength of 610-650 nm
Data Source
AI summary
A subject of the invention is the source of LED lighting that improves human cognitive performance during work activities or in any activity and simulates sun radiation in the biologically beneficial range 460 to 660 nm, for more than 90%. The whole system of the LED lighting source is set in such a way that 4.5 to 6% of blue and turquoise light radiation is added to the light radiation emitted from white LED chips, and it is advantageous if of equal radiation intensity. This measurement will provide for balancing of radiation intensity to 90% of the sunshine level. The generated combined light radiation of the cognitive LED lighting source has CRI 98 and correlated colour temperature 4000 to 4700 K, the sun radiation has correlated colour temperature 4982 K and CRI 99.5.